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CVE-2026-11414— Unauthenticated File Exfiltration in Altium Enterprise Server Vault Service via Hard-coded Cryptographic Key and Path Traversal

Quick assessment

Affected
Altium Altium Enterprise Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Altium Enterprise Server是美国Altium公司的一款本地化数据管理服务器。 Altium Enterprise Server存在安全漏洞，该漏洞源于Vault服务使用硬编码密钥签名文件下载URL，导致未经身份验证的网络攻击者可伪造有效下载签名并读取任意文件。

AI Predicted 10.0 Difficulty: Easy EPSS 0.48% · P39

Affected Version Matrix 1

VendorProduct Version RangeStatus
Altium Altium Enterprise Server < 8.1.1 affected
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I. Basic Information for CVE-2026-11414

Vulnerability Information
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Vulnerability Title
Unauthenticated File Exfiltration in Altium Enterprise Server Vault Service via Hard-coded Cryptographic Key and Path Traversal
Source: CVE Program / CVE List V5
Vulnerability Description
A hard-coded cryptographic key is used by Altium Enterprise Server to sign file download URLs in the Vault service. Because the key is identical across all installations, an unauthenticated network attacker who can reach the server can forge valid download signatures and retrieve files from the Vault storage area without any authentication, session, or credentials. A separate path traversal vulnerability in the same download endpoint allows the configured storage root to be escaped, enabling reads of arbitrary files on the server filesystem. Combined, these issues allow an unauthenticated attacker to obtain sensitive server configuration and key material, which can lead to full server compromise. The vulnerability can be chained with CVE-2026-9152 to enumerate and bulk-download stored content. Altium 365 cloud deployments are not impacted in practice, as file storage uses object storage rather than the local filesystem.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5
Vulnerability Title
Altium Enterprise Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Altium Enterprise Server是美国Altium公司的一款本地化数据管理服务器。 Altium Enterprise Server存在安全漏洞，该漏洞源于Vault服务使用硬编码密钥签名文件下载URL，导致未经身份验证的网络攻击者可伪造有效下载签名并读取任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Altium Altium Enterprise Server 0 ~ 8.1.1 -

II. Public POCs for CVE-2026-11414

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III. Intelligence Information for CVE-2026-11414

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Same Patch Batch · Altium · 2026-06-05 · 7 CVEs total

CVE-2026-11420 Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write
CVE-2026-11429 Path Traversal in Altium Vault ScriptsController Allows Unauthenticated Remote Code Execut
CVE-2026-11431 Path Traversal in Altium Projects Service Allows Arbitrary File Read
CVE-2026-11423 Path Traversal in Altium Enterprise Server Collaboration Service Allows Privilege Escalati
CVE-2026-11424 Server-Side Request Forgery in Altium Platform Design GraphQL Service Allows Information D
CVE-2026-11419 Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File Wr

IV. Related Vulnerabilities

Same product: Altium Enterprise Server
Same vendor: Altium
Same weakness: CWE-798

V. Comments for CVE-2026-11414

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